Heck, you know I'm not a plummer and know how to work on toilets
If there are no computer, injectors, 8 feet of harness and a dozen sensors to go wrong, I’m lost. Yeah, if it needs a carb rebuild you can count on me asking you to cart it your dad for a rebuild. I suspect it does have carb issues judging by the brand Sorensen carb rebuild kit stuffed behind the seat. By the looks of the box it is too badly weathered to be usable. I’m sure everything inside is trash.